计算：(x^2+2xy+y^2)/(x+y)

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计算：(x^2+2xy+y^2)/(x+y)

(x^2+2xy+y^2)/(x+y)
=(x+y)^2/(x+y)
=x+y

解原式=(x+y)^2/(x+y)
=x+y